Storm Data and Unusual Weather Phenomena - CIG - Mesonet

Storm Data and Unusual Weather PhenomenaTimeLocal/PathLengthPathWidthNumber ofPersonsEstimatedDamageLocation Date Standard (Miles) (Yards) Killed Injured Property Crops Character of StormApril 2005ALABAMA, SouthwestBaldwin CountyElberta30ALASKA, NorthernAKZ214AKZ219-225>226AKZ214AKZ223-225>226AKZ222AKZ223AKZ222ALASKA, SoutheastAKZ023-027>0280925CST0928CST00Hail (0.75)Yukon Delta06 0935AST0 0Blizzard1915ASTModerate northerly winds increased as a weak weather front approached; likely creating blizzard conditions at Cape Romanzof.Upper Koyukuk Valley - Denali - Ne. Slopes Of The Ern Ak Rng17 1500AST0 0Heavy Snow19 0830ASTHeavy snow occurred in several places in the interior as an Arctic front moved southeast on the 17th through 19th. In the Bettlesarea. Snow started at 0900 AST on the 16th. Total accumulation was 9.1 inches. Snow occurred from slow cooling from an ArcticFront drifting southeast over the area and warm moist air overrunning the region. Along the Alaska Range zones, the front pushedmoist air upslope to increase the cooling and produced:Zone 225 - 10.7 inches of snow in 24 hours at Denali National Park Headquarters. Snow began early in the morning of the 17thwith a total accumulation of 15.5 inches through early morning of the 19th.Zone 226 - 18 inches of snow reported by the Alaska Highway Maintenance camp at Trims on the Richardson Highway. Snowbegan on the 17th; time unknown.Yukon Delta20 1835AST0 0Blizzard2055ASTDeltana And Tanana - Denali - Ne. Slopes Of The Ern Ak Rng21 1800AST0 0High Wind (G62)23 1703ASTA strong weather front moved north from the Gulf of Alaska producing high south winds through Alaska Range Passes, as reportedat:Zone 223: Delta Junction ASOS: gust to 62 knots (71 mph).Zone 225: Amateur Radio observer: gusts to 58 knots (67 mph).Zone 226: US Army Mesonet stations: Texas Co-op: gusts to 55 knots (63 mph); Texas Range: gusts to 52 knots (60 mph).Blizzard conditions were likely at Cape Romanzof in zone 214 as the associated low pressure center approached the area on the20th.Middle Tanana Valley23 0649AST0 0Flood24 1109ASTKokomo Creek at Mile 38 of the Steese Highway flooded due to a high level of snowmelt and overrun from culverts still pluggedwith ice. One home and garage was flooded.Deltana And Tanana26 1615AST0 0Flood28 0300ASTAlong with a high amount of snowmelt, an ice jam formed in the Tanana River downstream of Piledriver slough in the Salcha Area,causing water to flow into Piledriver Slough, which then went overbank flooding portions of the Old Richardson Highway and anumber of residences along Piledriver Slough. Access to several residences were cut off during the event, and the Old Richardsonhighway had 2 to 3 feet of water over it for a time. Damage amounts unknown.Middle Tanana Valley28 0900AST0 0Flood30 2359ASTThe lower Chatanika went overbank twice from ice jams that formed downstream of a half-dozen or more cabins. Two of thecabins were flooded. Damage amount unknown. Event continued into May.Cape Decision To Salisbury Sound Coastal Area - Dixon Entrance To Cape Decision Coastal Area - SouthernInner Channels05 0500AST0 0High Wind (G56)1230ASTHigh winds from the south-southeast developed along a front that swept into the central and southern Southeast Alaskan coast.Peak wind gusts of 64 mph (56 knots) occurred on the Central Dixon Entrance buoy, and 62 mph (54 knots) at Cape Decision. Theweather spotter in Port Alexander measured south winds sustained at 46 mph (40 knots) with gusts to 63 mph (55 knots). Otherspotter reports estimated winds in excess of 60 mph in Craig and on Blashke Island. No significant damage nor injuries werereported.2428